Pest Trap

Abstract

To provide an easily installable trap capable of capturing a large amount of both flying pests and creeping pests.SOLUTION: A pest trap 1 includes: a storage part 2 for storing an attracting component, and storing attracted insects; a pest entry port 41a; a pest guide part 3; an escape suppression part 41 for suppressing escape of pests entering the storage part 2; and a hood part 5 functioning as a rain guard.SELECTED DRAWING: Figure 7

Description

[Technical field]

[0001] The present invention relates to a pest trap for trapping flying and crawling pests. [Background technology]

[0002] Conventionally, pest traps for trapping various pests have been known. For example, Patent Document 1 discloses a pest trap consisting of a container body and a roof having an approximately pyramidal overall shape. A trapping chamber having a predetermined depth is formed on the top surface of the container body, and pests climbing up from each side of the container body fall into the trapping chamber and are captured.

[0003] Patent Document 2 discloses a bee trap that includes a container that contains an attractant and trapping liquid, and a lid that is attached to the top of the container. The lid has an opening that communicates with the inside of the container, and bees that fly in from the outside and are attracted to the attractant and trapping liquid enter the container through the opening of the lid and are captured.

[0004] Furthermore, Patent Document 3 discloses that a container for accommodating a pest attractant and a trapping agent is formed with an upward hole and a downward hole, and the container is set up in a state where it is raised above the ground. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Utility Model Registration No. 3179567 [Patent Document 2] JP 2007-174964 A [Patent Document 3] JP 2003-70403 A Summary of the Invention [Problem to be solved by the invention]

[0006] However, the pest trap of Patent Document 1 is intended to capture crawling pests that walk on the ground, so it is almost impossible to expect any effect on capturing flying pests. Also, the wasp attractant trap of Patent Document 2 is used by hanging it at a high position, so it is almost impossible to expect any effect on capturing crawling pests.

[0007] On the other hand, Patent Document 3 describes that the pest trap can be used for both flying and crawling pests, but for example, in order to capture ants, woodlouse, pillbugs, etc., the container needs to be partially buried in the ground, which not only takes time to install, but also means that the trap can only be installed in places where it is possible to bury the container, meaning there is little freedom in setting the installation location. Also, in the trap of Patent Document 3, if you try to increase the amount of chemical solution to increase the total number of insects that can be captured, the container becomes larger and the liquid level becomes higher, making it more difficult for ants, woodlouse, pillbugs, etc. to enter. In other words, it is difficult to increase the total number of insects that can be captured with the trap of Patent Document 3.

[0008] The present invention has been made in view of the above-mentioned points, and an object of the present invention is to provide a trap which is capable of capturing a large number of both flying and crawling pests and which is easy to install. [Means for solving the problem]

[0009] In order to achieve the above object, the first invention is characterized in that a pest trap to be installed on an installation surface includes a storage section that stores an attractant component that attracts pests and stores the attracted pests, a pest entry opening that opens at the top of the storage section located above the installation surface, a pest guide section that is formed to extend upward from the installation surface and guides crawling pests on the installation surface toward the pest entry opening, and an escape suppression section that suppresses flying pests that have entered the storage section from escaping to the outside. In this case, the lower part of the storage section may be in contact with the installation surface or may be spaced upward from the installation surface.

[0010] According to this configuration, the pest trap can be easily installed by simply placing it on the installation surface. When the pest trap is installed, the attractant component stored in the storage section is released to the outside from the pest entry opening, so that, for example, crawling pests walking near the installation surface are attracted to the pest trap. Since the pest guide section extends from the installation surface and there is no particular obstacle between the installation surface and the pest guide section, the attracted crawling pests easily reach the pest guide section and walk along the pest guide section. And, since the pest guide section extends upward toward the pest entry opening, when the crawling pests attracted by the attractant component walk in the direction attracted by the attractant component, they naturally reach the pest entry opening, enter the storage section from the pest entry opening, and are captured. This allows a large number of crawling pests to be captured.

[0011] Furthermore, the attractant component released to the outside from the pest entry opening attracts flying pests to the pest entry opening. The flying pests that have been attracted to the vicinity of the pest entry opening invade the storage section in which the attractant component is stored through the pest entry opening. Once the flying pests have invaded the storage section, they remain inside the storage section because the escape suppression section prevents them from escaping. This allows a large number of flying pests to be captured.

[0012] The second invention is characterized in that the pest entry opening is formed to allow both crawling pests and flying pests to enter. Such a pest entry opening can be determined by an opening diameter or an opening area.

[0013] According to this configuration, crawling pests and flying pests can enter the storage section through a common pest entry opening. In other words, for example, one pest entry opening serves as an entry opening for both crawling pests and flying pests, so the configuration of the pest trap is simplified. Also, since the opening area of ​​the opening formed in the storage section can be small, problems such as the attraction component accidentally spilling out can be reduced. Furthermore, since the opening area is small, pests that have entered the storage section are less likely to escape to the outside.

[0014] The third invention is a pest trap that is installed on the ground outdoors. For example, the pest trap can be installed in a garden, a field, or the like.

[0015] According to this configuration, there is no need to bury the pest trap in the ground or hang it in a high place, so the pest trap can be easily installed and can capture both flying and crawling pests.

[0016] A fourth invention is characterized in that the storage section stores a trapping liquid containing the attractant component, and the trapping liquid is used to capture crawling pests and flying pests that have invaded through the pest entry opening.

[0017] According to this configuration, crawling and flying pests are captured by the trapping liquid, so a larger number of pests can be captured compared to when trapping pests using, for example, an adhesive or the like.

[0018] The fifth invention is characterized in that the escape prevention portion is provided around the pest entry opening and extends radially from the pest entry opening, and the escape prevention portion and the pest guide portion are integrally molded.

[0019] According to this configuration, the escape prevention section is provided around the pest entry opening, making it even more difficult for flying pests to escape.

[0020] A sixth invention is characterized in that the escape-prevention portion is provided continuously in a circumferential direction of the pest entry opening.

[0021] A seventh invention is characterized in that the pest guiding portion is provided around the escape-inhibiting portion.

[0022] The eighth invention is characterized in that the pest guide section is formed with a climbing surface for crawling pests having an inclination angle of a predetermined value or more, and the climbing surface is provided with a plurality of engagement portions arranged in the vertical direction, into which the claws of the legs of the crawling pests can be caught and engaged.

[0023] According to this configuration, when a crawling pest places its leg on the uphill surface, the claws at the tip of the leg are caught and engaged with the engagement portion of the uphill surface. Since the uphill surface has a plurality of engagement portions arranged in the vertical direction, the crawling pest can climb the uphill surface while engaging the claws of the plurality of legs of the crawling pest with each engagement portion. Therefore, even on a steep uphill surface with an inclination angle of a predetermined degree or more, the crawling pest can reach the top of the uphill surface without causing the legs to slip, thereby improving the capture rate. The uphill surface may be stepped, and in this case, the engagement portion can be composed of a tread surface at the stepped portion. A recess can be formed in the tread surface. The dimension of the tread surface in the depth direction can be set to 0.5 mm or more. Effect of the Invention

[0024] According to the present invention, a pest guide section for crawling pests is provided which extends from the installation surface on which the pest trap is installed to the pest entry point, and an escape prevention section is provided which prevents flying pests that have entered the storage section from escaping, thereby making it possible to capture a large number of both flying and crawling pests while facilitating installation. [Brief description of the drawings]

[0025] [Figure 1] 1 is a perspective view of a pest trap according to an embodiment of the present invention, seen from above. [Diagram 2] FIG. 2 is a side view of the pest trap. [Diagram 3] FIG. 2 is a plan view of the pest trap. [Figure 4] FIG. 2 is an exploded perspective view of the pest trap seen from above. [Diagram 5] FIG. 2 is an exploded perspective view of the pest trap seen from below. [Figure 6] 6 is a cross-sectional view taken along the line VI-VI in FIG. [Figure 7] 7 is a cross-sectional view taken along line VII-VII in FIG. [Figure 8] FIG. 4 is an enlarged cross-sectional view of the pest guide portion. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0026] Hereinafter, the embodiments of the present invention will be described in detail with reference to the drawings. Note that the following description of the preferred embodiments is merely illustrative in nature and is not intended to limit the present invention, its applications, or its uses.

[0027] 1 to 3 show a pest trap 1 according to an embodiment of the present invention. The pest trap 1 is a device that is installed on an installation surface 100 (shown by phantom lines in FIG. 2) for use. Installation includes using the pest trap 1 in an unfixed state by simply placing it there, and also includes using the pest trap 1 in a fixed state so that it does not move. The maximum outer diameter of the pest trap 1 can be set to, for example, about 10 cm to 20 cm, but the size of the pest trap 1 is not limited to this.

[0028] The installation surface 100 may be, for example, an outdoor ground (a garden, a field, a playground, etc.), or an indoor floor surface, etc. When the pest trap 1 is installed on the ground, it may be installed on sand or soil, or on a lawn or grass. When the pest trap 1 is installed on a floor surface, it may be installed on a concrete floor, a wooden floor, a floor with a resin sheet, etc. The installation surface 100 may be horizontal, or may be inclined to such an extent that the pest trap 1 does not slip. The installation surface 100 may be a flat surface, or may be an uneven surface. The installation surface 100 may be, for example, a desk or a table. The pest trap 1 may be installed on a horizontal surface, or may be installed on a slightly inclined surface. In addition, the pest trap 1 is preferably installed on the installation surface 100 and used, but may be used by hanging it from, for example, a pole or a tree branch. When hanging the pest trap 1, a string, a thread, etc. may be attached to the pest trap 1.

[0029] The pest trap 1 is a device that attracts and captures various pests, and as shown in Figs. 4 and 5, it is equipped with a storage section 2 that stores the attracted pests, a pest guide section 3 having a stepped portion, and a hood section 5 that functions as a rain cover or the like. The storage section 2 is large enough to store a plurality of attracted pests of various kinds, and is configured to store a capture liquid containing an attractant component. The details of the capture liquid will be described later, but since it contains an attractant component, it is a liquid that exerts the effect of attracting pests and the effect of capturing crawling pests and flying pests that have been attracted and stored in the storage section 2.

[0030] The storage section 2 includes a bottom wall section 20 and a peripheral wall section 21 that extends upward from the peripheral edge of the bottom wall section 20 and is continuous in the circumferential direction of the bottom wall section 20. The bottom wall section 20 and the peripheral wall section 21 are integrally molded. The storage section 2 may be composed of a member formed by injection molding a resin material, or may be composed of a member formed by vacuum forming or pressure forming a resin sheet.

[0031] 6 and 7, the bottom wall portion 20 is disposed above the installation surface 100 at a predetermined distance. If it is assumed that the installation surface 100 is a flat horizontal surface, the bottom wall portion 20 and the installation surface 100 are parallel to each other. This is not a limitation, and the bottom wall portion 20 may be disposed in contact with the installation surface 100, in which case the bottom wall portion 20 extends along the installation surface 100. In addition, although the bottom wall portion 20 is substantially circular in this embodiment, it is not a limitation, and may be elliptical or polygonal.

[0032] A flange portion 21a that protrudes radially outward and extends circumferentially is formed at the upper end of the peripheral wall portion 21. The flange portion 21a may be provided continuously around the entire circumference of the peripheral wall portion 21, or may be provided discontinuously. The flange portion 21a may be omitted.

[0033] The pest guide part 3 includes a lower part 30 constituting the lower half of the pest guide part 3, and an upper part 40 constituting the upper half of the pest guide part 3. The lower part 30 and the upper part 40 are integrally molded. The pest guide part 3 may be made of a member made by injection molding a resin material, or may be made of a member made by forming a resin sheet by vacuum forming, pressure forming, or a combination of both. The thickness of the resin sheet may be, for example, 0.5 mm or more, and the upper limit of the thickness may be 1.5 mm or less.

[0034] Assuming that a center line 200 (shown in FIG. 6) extends vertically through the center of the storage unit 2, the lower part 30 extends continuously in the circumferential direction of the center line 200 and has a shape in which the diameter increases toward the lower side. The center line 200 is a vertical line. The lower part 30 is disposed so as to surround the periphery of the peripheral wall part 21 of the storage unit 2, and a space is formed between the outer surface of the peripheral wall part 21 of the storage unit 2 and the inner surface of the lower part 30. The lower end part of the lower part 30 is located below the bottom wall part 20 of the storage unit 2, and is a part (contact part) that contacts the installation surface 100. The lower end part of the lower part 30 and the bottom wall part 20 of the storage unit 2 may be located at the same position in the vertical direction. However, in this case, if there is a foreign object such as a stone between the bottom wall part 20 and the installation surface 100, or if the installation surface 100 is uneven, the lower end part of the lower part 30 may be raised above the installation surface 100. In this regard, as in the embodiment, since the lower end of the lower part 30 is located below the bottom wall part 20 of the storage part 2, the lower end of the lower part 30 can be reliably brought into contact with the installation surface 100 regardless of the presence or absence of unevenness or foreign matter between the bottom wall part 20 and the installation surface 100. The entire circumferential direction of the lower end of the lower part 30 may be in contact with the installation surface 100, or only a portion of it may be in contact with the installation surface 100. The outer diameter of the pest guide part 3 is largest at its lower end, so that the pest trap 1 can be stabilized when installed on the installation surface 100.

[0035] As shown in Figs. 6 and 7, the upper end of the lower part 30 is provided with a ring-shaped lower extension plate 31 that extends radially inward and continuously in the circumferential direction. The flange part 21a of the storage part 2 is arranged directly below the lower extension plate 31. As shown in Figs. 5 and 6, a plurality of locking claws 31a that protrude downward are provided at intervals in the circumferential direction near the radial outer end of the lower extension plate 31. The locking claws 31a are formed so as to pass radially outward of the flange part 21a of the storage part 2 and reach the lower side of the flange part 21a, and are locked by being hooked from below onto the flange part 21a. By locking the locking claws 31a to the flange part 21a, the storage part 2 can be integrated with the pest guide part 3 and put into a usable state. The connection structure between the storage part 2 and the pest guide part 3 may be a structure other than the structure using the locking claws 31a described above. In addition, when the flange portion 21a is not provided, the accommodation portion 2 and the pest guide portion 3 may be bonded together.

[0036] Like the lower portion 30, the upper portion 40 extends continuously in the circumferential direction of the center line 200 and has a shape in which the diameter increases toward the lower side, but has a smaller diameter overall than the lower portion 30. In other words, the outer diameter of the lower end portion of the upper portion 40 approximately matches the inner diameter of the lower extending plate portion 31, and the lower end portion of the upper portion 40 and the radially inner end portion of the lower extending plate portion 31 are continuous.

[0037] Moreover, the upper part 40 is located above the storage unit 2 and forms part of the lid of the storage unit 2. Since the upper part 40 is inclined so that it is located higher as it moves radially inward, the distance from the bottom wall part 20 of the storage unit 2 to the upper part 40 becomes longer as it moves radially inward. In other words, since the height of the storage unit 2 becomes higher as it moves radially inward, the pest storage space of the storage unit 2 becomes wider, and the number of pests that can be stored in the storage unit 2 can be increased.

[0038] The upper end of the upper part 40 of the pest guide part 3 is provided with an annular upper extension plate part 41 that extends radially inward and continuously in the circumferential direction. In other words, the pest guide part 3 is provided around the upper extension plate part 41. This upper extension plate part 41 is molded integrally with the pest guide part 3. The pest guide part 3 and the upper extension plate part 41 may be separate members, in which case one may be integrated with the other by adhesion, a fitting structure, or the like.

[0039] The radial dimension (width) of the upper extending plate portion 41 is set to be longer than the dimension in the same direction of the lower extending plate portion 31. This upper extending plate portion 41 is also located above the storage section 2, so that the upper extending plate portion 41 also forms part of the lid of the storage section 2. The upper extending plate portion 41 may be horizontal, or may be gradually inclined downward as it goes radially inward.

[0040] The upper extension plate portion 41 is formed with a pest inlet 41a for allowing crawling pests and flying pests to invade the storage section 2. Since the upper extension plate portion 41 is located above the installation surface 100, the pest inlet 41a formed in the upper extension plate portion 41 is also located above the installation surface 100 and opens at the top of the storage section 2. The pest inlet 41a is formed to allow both crawling pests and flying pests to invade. Examples of crawling pests and flying pests that can invade through the pest inlet 41a will be described later. Examples of the shape of such pest inlet 41a include a circle, an ellipse, an oblong, and a polygon, and any of these shapes may be used, but in this embodiment, the shape is a circle. The dimensions of the pest inlet 41a that allows both crawling pests and flying pests to invade are, for example, a circle with a diameter of 20 mm or more, preferably 30 mm or more. In the case of an ellipse or an oval shape, both the major axis and the minor axis can be equal to or greater than the above dimensions. In the case of a polygon, the lengths of all sides can be equal to or greater than the above dimensions. In this embodiment, only one pest entry opening 41a is provided in the center of the upper extension plate portion 41, but this is not limited thereto, and the pest entry opening 41a may be provided in a portion radially displaced from the center of the upper extension plate portion 41, or any number of pest entry openings 41a, two or more, may be provided in the upper extension plate portion 41. When multiple pest entry openings 41a are provided, the shapes and dimensions of the pest entry openings 41a may be the same or different from each other.

[0041] The upper extension plate portion 41 is an escape prevention portion that prevents flying pests that have invaded the storage section 2 from going out. That is, flying pests that have invaded the storage section 2 through the pest entry opening 41a may fly in the space above the capture liquid level in the storage section 2 before being captured by the capture liquid. In addition, even if a flying pest that has invaded the storage section 2 comes into contact with the capture liquid, it may escape from the capture liquid by flapping its wings. Since the upper extension plate portion 41 is provided around the pest entry opening 41a and extends in the radial direction of the pest entry opening 41a, flying pests that fly in the space above the capture liquid level in the storage section 2 are prevented from moving freely upward by hitting the lower surface of the upper extension plate portion 41, and since the pest entry opening 41a is opened so as to be surrounded by the upper extension plate portion 41 and the opening area is limited, it becomes difficult for flying pests to go out from the pest entry opening 41a. In this embodiment, the upper extension plate portion 41 is provided continuously in the circumferential direction of the pest entry opening 41a, but is not limited thereto, and may be provided discontinuously in the circumferential direction of the pest entry opening 41a.

[0042] The pest guide section 3 is formed to extend upward from the installation surface 100 on which the pest trap 1 is installed, and is a section that guides crawling pests walking on the installation surface 100 toward the pest entry opening 41a. Specifically, the pest guide section 3 has a lower climbing surface 32 formed by the outer peripheral surface of the lower section 30, and an upper climbing surface 42 formed by the outer peripheral surface of the upper section 40. The lower climbing surface 32 and the upper climbing surface 42 are climbing surfaces for crawling pests with a predetermined inclination angle or more, but flying pests may also climb. Creeping pests are arthropods, and therefore the pest guide section 3 is a member that forms a climbing surface for arthropods, and can be called an arthropod climbing member, or can be called an arthropod guide member because it is also a member that guides arthropods upward.

[0043] The lower slope 32 extends upward from the installation surface 100 and also extends around a center line 200 shown in Fig. 6. In this embodiment, the lower slope 32 has a continuous conical surface shape around the center line 200, but is not limited thereto and may be discontinuous around the center line 200, i.e., the lower slope 32 may be provided discontinuously around the center line 200.

[0044] 8, the lower climbing surface 32 is provided with a plurality of engaging portions 33, 33, ... aligned in the vertical direction, on which the claws of the legs of arthropods can be caught and engaged. By providing the engaging portions 33, 33, ..., it becomes possible for arthropods to climb the slope even without forming a textured pattern or the like on the lower climbing surface 32. Note that a textured pattern or the like may be formed on the lower climbing surface 32.

[0045] That is, the lower climbing surface 32 is formed in a continuous stepped shape from the lower end to the upper end of the lower climbing surface 32. The engagement portion 33 is composed of a tread surface in the stepped portion, and is formed continuously in the circumferential direction of the lower part 30. The depth dimension D of the engagement portion 33 is set to 0.5 mm or more. Furthermore, the stepped portion is formed with a riser surface 34 that extends in the vertical direction from the lower tread surface to the upper tread surface. The engagement portion 33 and the riser surface 34 are provided continuously in the circumferential direction of the lower part 30.

[0046] As shown in FIG. 8, by setting the depth dimension D of the engagement portion 33 to 0.5 mm or more, a depth dimension of the engagement portion 33 sufficient for the claws of the legs of multiple arthropods to be caught can be ensured. This dimension D is based on the results of climbing tests conducted by the inventors of the present application using, for example, ants, pillbugs, earwigs, etc. The dimensions of the claws at the tips of the legs of ants, pillbugs, earwigs, etc. are at least about 0.3 mm, so the depth dimension D of the engagement portion 33 needs to be set longer than 0.3 mm so that the claws can be completely caught, and it is 0.5 mm or more that can increase the ease of climbing of multiple ants, pillbugs, earwigs, etc. The depth dimension D of the engagement portion 33 is more preferably 0.7 mm or more, and more preferably 1.0 mm or more.

[0047] The upper limit of the depth dimension D of the engagement portion 33 can be, for example, 5.0 mm or less. The reason for this is that if the depth dimension D of the engagement portion 33 is too long, arthropods tend to recognize the step as an obstacle and not attempt to climb. This upper limit is also based on the results of climbing tests using multiple ants, pill bugs, earwigs, etc.

[0048] A recess 33a recessed downward is provided on the rear side of the engagement portion 33. The recess 33a is formed so as to become deeper toward the rear side of the engagement portion 33. The inner surface of the recess 33a is configured as a curved surface. The recess 33a can also be called a groove or a concave portion extending in the circumferential direction of the lower portion 30.

[0049] On the other hand, the front part of the engagement part 33 has an inclined surface 33b that is inclined so as to be positioned higher toward the front end of the engagement part 33. The inclined surface 33b extends to the front end of the engagement part 33 and is a surface that is continuous with the upper end of the riser surface 34. The boundary part between the front end of the inclined surface 33b and the upper end of the riser surface 34 is composed of an arc-shaped surface, and no sharp edge is formed. This makes it safe even if the user's hand or the like touches the engagement part 33. The back side of the inclined surface 33b is continuous with the inner surface of the recess 33a. Note that such a structure of the engagement part 33 does not require high molding precision such as embossing, so it can be formed regardless of the molding method.

[0050] Here, as shown in Fig. 8, a first imaginary plane 301 extending so as to connect the front ends of the multiple engagement parts 33, 33, ... arranged in the vertical direction, and a second imaginary plane 302 extending the inclined plane 33b until it intersects with the first imaginary plane 301 are assumed. In this case, the first imaginary plane 301 extending so as to connect the front ends of the multiple engagement parts 33 present on a vertical cross section can be set, and this first imaginary plane 301 can be a plane extending in a direction perpendicular to the paper surface of Fig. 8. The first imaginary plane 301 intersects with the horizontal plane 300 at an angle α.

[0051] The angle α is the inclination angle of the lower slope surface 32, and is a predetermined angle or more. The predetermined angle or more is, for example, 40° or more. That is, if the inclination angle is less than 40°, arthropods may be able to climb even a flat resin slope surface. However, if the inclination angle is 40° or more, there are several types of arthropods that cannot climb a flat resin slope surface or a simple resin staircase structure. This is because the claws of the legs of arthropods do not get caught on the smooth surface of the resin material. Therefore, by providing the engagement part 30 on a slope surface with an inclination angle of 40° or more, it becomes possible to make various types of arthropods climb. The angle α can be 50° or more. The closer the angle α is to 90°, the smaller the outer diameter of the lower end of the pest guide part 3 can be without changing the height of the pest guide part 3, so that the product can meet the consumer needs of installing the pest trap 1 in a space-saving manner. The upper limit of the angle α can be 80°, but is not limited to this.

[0052] Among the angles formed by the first imaginary plane 301 and the second imaginary plane 302, the angle β formed on the upper side of the intersection of the first imaginary plane 301 and the second imaginary plane 302 is less than 90°, i.e., an acute angle. As a result, the inclined surface 33b becomes steeper in the direction toward the back of the engagement portion 33, so that the claws of the legs of the arthropods are more likely to be caught by the engagement portion 33. When the inclined surface 33b becomes closer to the horizontal, even if the claws of the legs of the arthropods come into contact with the engagement surface 33, the claws will easily slip when a downward force is applied during climbing. This is also based on the results of climbing tests using multiple ants, pill bugs, earwigs, etc. The angle β is preferably less than 80°, which further increases the ease with which crawling pests can climb.

[0053] 1 and 2, the upper climbing surface 42 extends upward from the radially inner end of the lower extending plate portion 31, and also extends around a center line 200 shown in Fig. 6. Similar to the lower climbing surface 32, the upper climbing surface 42 is also provided with a plurality of engagement portions 43, 43, ... aligned in the vertical direction, on which the claws of the legs of an arthropod can be caught and engaged.

[0054] The inclination angle of the upper climbing surface 42 can be set similarly to the inclination angle of the lower climbing surface 32. The inclination angles of the upper climbing surface 42 and the lower climbing surface 32 may be the same or different. It is also possible to make the inclination angle of the upper climbing surface 42 larger than the inclination angle of the lower climbing surface 32, or conversely, to make it smaller. In addition, the lower climbing surface 32 and the upper climbing surface 42 can be connected to form a single climbing surface. In addition, three or more climbing surfaces can be provided.

[0055] Next, the hood portion 5 will be described. As shown in FIG. 1 and other figures, the hood portion 5 is a member for covering the pest entry opening 41a from above, and is made of a resin material, water-resistant paper, or the like. As shown in FIG. 3, the outer edge of the hood portion 5 overlaps with the lower climbing surface 32 in a plan view, which allows the hood portion 5 to cover not only the pest entry opening 41a, but also parts of the upper climbing surface 42 and the lower climbing surface 32. This makes it difficult for rain and the like to enter through the pest entry opening 41a.

[0056] A plurality of vertically extending columnar portions 50 are provided on the back surface of the hood portion 5 at intervals in the circumferential direction. The lower end of each columnar portion 50 is fixed to the upper surface of the upper extension plate portion 41, thereby integrating the hood portion 5 and the pest guide portion 3. In this state, the main body portion of the hood portion 5 is spaced upward from the pest entry opening 41a, and a space is formed between the main body portion of the hood portion 5 and the pest guide portion 3 through which pests can pass.

[0057] A plurality of recesses 51 formed to be recessed downward are provided at intervals in the circumferential direction on the outer periphery of the hood portion 5. The lower end of the recesses 51 contacts a part of the upper climbing surface 42 of the upper portion 40. The hood portion 5 is also supported by the recesses 51 on the pest guide portion 3. The hood portion 5 may be omitted. The shape of the hood portion 5 is not limited to the above-mentioned shape, and may be, for example, a flat plate shape.

[0058] (Climbing test) Next, the results of a climbing test of the lower climbing surface 32 using crawling pests will be described. The example is a climbing member for arthropods having a lower climbing surface 32 with a plurality of engagement portions 33 as shown in Fig. 8. The dimension D in this example is 0.8 mm. The dimension in the vertical direction of the riser surface 34 in this example is 6 mm. The inclination angle of the lower climbing surface 32 is 50°. The climbing member for arthropods is formed by vacuum molding.

[0059] The comparative example is a typical staircase formed on a surface with an inclination angle of 50 degrees. The tread surface of the comparative example is horizontal, and the dimension in the depth direction is 0.8 mm. The dimension in the vertical direction of the riser surface of the comparative example is 6 mm. The insects tested are pill bugs. The comparative example is also formed by vacuum molding.

[0060] Ten test insects were placed on the lower climbing surface 32 of the embodiment, and ten test insects were also placed on the stairs of the comparative example. The number of test insects that could climb from the place where they were placed to the top was counted. As a result, in the comparative example, all test insects were unable to climb because their legs slipped, and there were no test insects that could climb, whereas in the embodiment, there were few test insects whose legs slipped, and eight test insects climbed. The same results were obtained even when the dimension D was 0.5 mm. Since pillbugs have a low climbing ability among creeping pests, it can be assumed that if the climbing surface is one that pillbugs can climb, other creeping pests such as ants, earwigs, and cockroaches can also climb.

[0061] (Composition of capture solution) The trapping liquid contained in the storage section 2 is a liquid agent that has the effect of attracting crawling pests and flying pests, and is also a liquid agent for capturing crawling pests and flying pests in the storage section 2, so it can also be called a pest attracting and trapping liquid. The amount of the trapping liquid is not particularly limited, but can be set to, for example, 100 ml or more. In particular, the trapping liquid of this embodiment artificially reproduces the fermented odor of sap that attracts crawling pests and flying pests in nature, and can also be called artificial sap. The trapping liquid contains sugar, yeast, alcohol, and water as components of the artificial sap. Furthermore, the trapping liquid of this embodiment contains a food additive surfactant (non-ionic surfactant) as an escape prevention component (trapping component).

[0062] The sugar may be any one of monosaccharides, disaccharides, and polysaccharides, or any two or more of them may be mixed together. Usable monosaccharides include, for example, glucose, fructose, and galactose. Usable disaccharides include, for example, sucrose, maltose, and lactose. Usable polysaccharides include substances in which a large number of monosaccharide molecules are polymerized through glycosidic bonds, such as starch.

[0063] In this embodiment, fructose glucose liquid sugar is used. The content of fructose glucose liquid sugar can be, for example, 1 w / v% or more and 75 w / v% or less. The yeast can be, for example, dry yeast. The content of yeast can be, for example, 0.001 mass% or more and 5 mass% or less. By adding yeast, sugar is fermented by the yeast to produce alcohol and carbon dioxide.

[0064] The alcohol may be at least one of ethanol, butane-2,3-diol, and glycerin, or any combination of these may be used. The alcohol content may be, for example, 0.01 w / v% to 15 w / v%. The alcohol is produced by yeast fermentation and can be omitted, but adding alcohol can provide good attractant properties even in the early stages of fermentation.

[0065] The capture liquid may contain acetic acid. The content of acetic acid may be, for example, 0.005 w / v% or more and 0.5 w / v% or less. The capture liquid may also contain lactic acid. The content of lactic acid may be, for example, 0.005 w / v% or more and 5 w / v% or less. Since acetic acid and lactic acid form esters with alcohol, if these are mixed together, the composition may change due to long-term storage. Therefore, from the viewpoint of long-term storage, it is preferable to omit at least one of acetic acid and lactic acid, or alcohol.

[0066] The capture liquid may also contain sodium propionate. The content of sodium propionate can be, for example, 0.005 w / v % or more and 0.5 w / v % or less.

[0067] The surfactant added to the artificial sap as the escape prevention component is preferably a nonionic surfactant, since it does not adversely affect the yeast, and particularly, as in this embodiment, a food additive surfactant is preferable. The food additive surfactant can be at least one of polyoxyethylene sorbitan monolaurate and polyoxyethylene sorbitan monooleate, and any two or more of these can be mixed and used. The content of the food additive surfactant can be, for example, 0.001 w / v% or more and 1.0 w / v% or less. Since the surfactant is a food additive, it is unlikely to adversely affect yeast fermentation, and it is possible to quickly start fermentation by yeast at the start of use, and a high attracting effect can be obtained over a long period of time. For example, Tween 20, Tween 80, etc. manufactured by Tokyo Chemical Industry Co., Ltd. can be used as the food additive surfactant.

[0068] (Fermentability of capture liquid) The trapping liquid contains dry yeast as a yeast, so it ferments due to the action of the yeast. The odor generated by the fermentation can increase the insect attracting effect. Trap liquid formulation 1 and trap liquid formulation 2 are shown in Table 1 and Table 2, respectively.

[0069] [Table 1]

[0070] [Table 2]

[0071] The capture liquid is obtained by first dissolving fructose and glucose in water, and then adding ethanol, acetic acid, lactic acid, a food additive surfactant, and dry yeast. Capture liquid formulation 1 shown in Table 1 and capture liquid formulation 2 shown in Table 2 use different dry yeast. The dry yeast in capture liquid formulation 1 is Kyoritsu Foods' Tokuyo Dry Yeast 3g (called Kyoritsu Dry Yeast), and the dry yeast in capture liquid formulation 2 is Nissin Foods' Nissin Super Camellia Vacuum Pouch 3g (called Nissin Dry Yeast). The dry yeast may be a product of another company.

[0072] The fermentation confirmation test method for the capture liquid is explained below. After adding 100 mg of dry yeast to 20 g of the test material to obtain a capture liquid, it is immediately placed in a 10.2 L container. Time measurement begins immediately after the capture liquid is placed in the container. The container is a glass cylinder with an inner diameter of 20 cm x 30 cm, the top and bottom of which are covered with glass plates to make it airtight. The atmospheric temperature during the test was 24.5°C and the humidity was 47%. After a certain period of time had passed, the carbon dioxide concentration in the container was measured. The measuring device was a GM70 made by VAISALA, and was used after 15 minutes or more had passed since it was started. The carbon dioxide concentration in the blank air was about 220 to 300 ppm.

[0073] [Table 3]

[0074] Table 3 shows the carbon dioxide concentration of capture liquid formulation 1, the carbon dioxide concentration of capture liquid formulation 1 without Tween 20, the carbon dioxide concentration of capture liquid formulation 2, and the carbon dioxide concentration of capture liquid formulation 2 without Tween 20, measured after 1 hour, 24 hours, and 48 hours, respectively. As is clear from Table 3, it was confirmed that fermentation proceeded in both capture liquid formulation 1 containing Kyoritsu dry yeast and capture liquid formulation 2 containing Nisshin dry yeast. In addition, fermentation proceeded regardless of the presence or absence of Tween 20, and it can be seen that Tween 20 does not inhibit fermentation by dry yeast. Similar results were obtained in the case of Tween 80.

[0075] Capture solution formulations 3 and 4 are shown in Table 4. The method for obtaining capture solution formulations 3 and 4 is the same as the method for obtaining capture solution formulation 1. The same applies below.

[0076] [Table 4]

[0077] The capture liquid formulation 3 does not contain glucose, and the capture liquid formulation 4 does not contain alcohol. The measurement results of the carbon dioxide concentration of the capture liquid formulations 3 and 4 are shown in Table 5.

[0078] [Table 5]

[0079] In both trapping liquid formulations 3 and 4, the carbon dioxide concentration was high after 1 hour, and fermentation was promoted from the early stage. In addition, the carbon dioxide concentration was also high after 48 hours in both trapping liquid formulations 3 and 4, indicating that fermentation continued for a long time.

[0080] Capture solution formulation 5 is shown in Table 6. Capture solution formulation 5 does not contain alcohol, lactic acid, or acetic acid.

[0081] [Table 6]

[0082] Capture solution formulation 6 is shown in Table 7. Capture solution formulation 6 does not contain alcohol or lactic acid, and has an acetic acid concentration of 0.01%.

[0083] [Table 7]

[0084] Capture solution formulation 7 is shown in Table 8. Capture solution formulation 7 does not contain alcohol or lactic acid, and has an acetic acid concentration of 0.05%.

[0085] [Table 8]

[0086] The measurement results of the carbon dioxide concentration of capture solution formulations 5 to 7 are shown in Table 9.

[0087] [Table 9]

[0088] It can be seen that the carbon dioxide concentration was high after 55 hours in all of capture solution formulations 5 to 7, and fermentation continued for a long time.

[0089] [Table 10]

[0090] Capture solution formulation 8 is shown in Table 10. Capture solution formulation 8 does not contain alcohol or acetic acid, and has a lactic acid concentration of 0.05%.

[0091] [Table 11]

[0092] Capture solution formulation 9 is shown in Table 11. Capture solution formulation 9 does not contain alcohol or acetic acid, and has a lactic acid concentration of 0.1%.

[0093] [Table 12]

[0094] Capture solution formulation 10 is shown in Table 12. Capture solution formulation 10 does not contain alcohol or lactic acid, and has an acetic acid concentration of 0.1%.

[0095] [Table 13]

[0096] Capture solution formulation 11 is shown in Table 13. Capture solution formulation 11 is a formulation that does not contain alcohol or lactic acid, and has an acetic acid concentration of 0.3%.

[0097] The measurement results of the carbon dioxide concentration of capture solution formulations 8 to 11 are shown in Table 14.

[0098] [Table 14]

[0099] In all of the capture solution formulations 8 to 11, the carbon dioxide concentration was high after 66 hours, and it can be seen that fermentation continued for a long time. Therefore, even if both lactic acid and acetic acid are not contained, fermentation can continue for a long time by containing either one of them.

[0100] (surface tension of capture liquid) The surface tension was measured using a Dunui surface tension tester (Ito Seisakusho Co., Ltd.). The ambient temperature during the measurement was 25.8°C and the humidity was 32%. The surface tension measurements below are the average values ​​of three measurements.

[0101] Table 15 shows the formulation of Comparative Example 1. The formulation of Comparative Example 1 is a formulation in which the food additive surfactant is removed from Capture Liquid Formulation 1 shown in Table 1.

[0102] [Table 15]

[0103] The surface tension of the formulation of Comparative Example 1 was 61.0 mN / m. The surface tension of ion-exchanged water is 72.5 mN / m.

[0104] The trapping liquid formulation 12 shown in Table 16 below is a formulation in which Tween 20 is 0.5% by mass relative to the trapping liquid formulation 1. The trapping liquid formulation 13 is a formulation in which Tween 20 is 0.25% by mass relative to the trapping liquid formulation 1. The trapping liquid formulation 14 is a formulation in which Tween 20 is 0.10% by mass relative to the trapping liquid formulation 1. The trapping liquid formulation 15 is a formulation in which Tween 20 is 0.05% by mass relative to the trapping liquid formulation 1. The trapping liquid formulation 16 is a formulation in which Tween 20 is 0.01% by mass relative to the trapping liquid formulation 1. The trapping liquid formulation 17 is a formulation in which Tween 80 is 0.5% by mass relative to the trapping liquid formulation 1. Table 16 shows the surface tensions of trapping liquid formulations 12 to 17.

[0105] [Table 16]

[0106] As shown in Table 16, by adding a surfactant, the surface tension of the trapping liquid can be significantly reduced compared to the formulations of the comparative examples. When test insects (bees and cockroaches) were placed in Comparative Example 1 (without food additive surfactant), they were observed to continue to struggle and try to escape for more than 5 minutes, but when the test insects were placed in trapping liquid formulations 12 to 17 containing food additive surfactant, they stopped their behavior within 3 minutes and floated on the water surface. In this way, by adding a surfactant to reduce the surface tension, it is possible to stop the behavior of pest insects, preventing them from escaping from the storage unit 2 and improving the trapping effect. The mechanism by which the reduction in surface tension leads to the stopping of behavior has not been fully clarified, but it is thought to be as follows. That is, by reducing the surface tension of the trapping liquid, the trapping liquid is more likely to adhere to the insect body and wings, so that the wings and body become heavy and the insect cannot fly up from the liquid surface. Then, while the insect is struggling on the liquid surface, the trapping liquid attached to the insect body blocks the spiracles and suffocates. In this way, when the pests attracted by the trapping liquid drop onto the surface of the trapping liquid, the surfactant reduces the surface tension of the liquid, so the pests cannot escape. Therefore, the surfactant added to the trapping liquid can be said to be an escape prevention component.

[0107] The trapping liquid does not contain any insecticidal components. Therefore, it is highly safe and can be used in ordinary home gardens, fields, etc. Note that the trapping liquid may contain insecticidal components.

[0108] (Pest capture test) The pest trap 1 according to the above embodiment was installed in a square in Hatsukaichi City, Hiroshima Prefecture, and left for one month. The time was summer. The formulation of the trapping liquid was trapping liquid formulation 1 shown in Table 1. The angle α of the pest trap 1 was 60°, the dimension D in the depth direction of the engagement portion 33 was 0.8 mm, and the dimension in the vertical direction of the riser surface 34 was 6 mm. The height of the pest entry opening 41a based on the installation surface was 50 mm. The amount of trapping liquid was 100 ml.

[0109] One month after the installation, the pest trap 1 was retrieved and the number of pests contained in the storage section 2 was counted. As a result, 534 ants, 146 pillbugs, 21 slugs, more than 300 fruit flies, and 30 wood cockroaches were captured. In this way, a large number of pests can be contained in one storage section 2. The fact that more than 300 fruit flies were captured means that the upper extension plate section 41 has a high effect of suppressing the escape of flying pests. In addition, the fact that 146 pillbugs, which have low climbing ability, were captured means that the engagement sections 33, 43 have a high effect of preventing the legs from slipping. In addition, the trapping liquid exerts a sufficient attracting effect on many types of pests and also exerts a trapping effect.

[0110] Next, three of the above-mentioned pest traps 1 were prepared in an ordinary household, and they were placed in the garden at intervals from each other and left for two weeks. The time was summer. The formulation of the trapping liquid and the dimensions of each part were the same as above. Each pest trap 1 captured the pests shown in Table 17.

[0111] [Table 17]

[0112] Three pest traps 1 were similarly set up in a different area from the above-mentioned general households and left for two weeks. The time was summer. The formulation of the trapping liquid and the dimensions of each part were the same as above. Each pest trap 1 captured a large number of various kinds of pest insects, as shown in Table 18.

[0113] [Table 18]

[0114] As shown in Tables 17 and 18, many kinds of flying pests and crawling pests can be contained in one containment section 2. It is expected that the types and numbers of pests captured will vary depending on the installation location, time of year, climate, etc., but as shown in Tables 17 and 18, it is possible to capture many kinds of flying pests and crawling pests with one pest trap 1.

[0115] (Effects of the embodiment) As described above, according to this embodiment, the pest trap 1 can be easily installed by simply placing it on the installation surface 100. When the pest trap 1 is installed, the attractant component stored in the storage section 2 is released to the outside from the pest entry opening 41a, so that, for example, crawling pests walking near the installation surface 100 are attracted to the pest trap 1. Since the pest guide section 3 extends from the installation surface 100 and there are no particular obstacles between the installation surface 100 and the pest guide section 3, the attracted crawling pests easily reach the pest guide section 3 and walk along the pest guide section 3.

[0116] At this time, since the lower and upper climbing surfaces 32 and 42 of the pest guide section 3 are respectively provided with a plurality of engagement sections 33, 43 aligned in the vertical direction, the crawling pests easily climb the lower and upper climbing surfaces 32, 42 and reach the pest entry opening 41a. Also, when the pests attracted by the attractant component walk in the direction attracted by the attractant component, they naturally reach the pest entry opening 41a. As a result, a large number of crawling pests enter the storage section 2 through the pest entry opening 41a and are captured.

[0117] Furthermore, the attractant component released to the outside from the pest entry opening 41a attracts flying pests to the pest entry opening 41a. The flying pests attracted to the vicinity of the pest entry opening 41a invade the storage section 2 in which the attractant component is stored through the pest entry opening 41a. Once the flying pests invade the storage section 2, they are prevented from escaping by the upper extension plate portion 41, so they remain in the storage section 2. This allows a large number of flying pests to be captured.

[0118] The above-described embodiment is merely illustrative in all respects and should not be construed as limiting. Furthermore, all modifications and variations within the scope of the claims are within the scope of the present invention. [Industrial Applicability]

[0119] As described above, the present invention can be used in, for example, a general home garden or a field. [Explanation of symbols]

[0120] 1 pest trap 2. Storage section 3 Pest guide part (climbing material for arthropods) 32 Lower Climbing Surface 33 Engagement part 33a Recess 33b Slope 41 Upper extension plate part (escape suppression part) 41a Pest entry point 42 Upper Climbing Surface 43 Engagement part 100 Installation surface 301 First Virtual Plane 302 Second Virtual Plane

Claims

1. In pest traps, A storage section that stores an attractant component that attracts pests and stores the attracted pests; A pest intrusion opening at the top of the storage section; A pest guide unit that guides pests toward the pest entry opening; An escape prevention unit that prevents pests that have entered the storage unit from escaping; A hood portion that covers the pest intrusion opening from above and functions as a rain shield, The hood portion has a plurality of recesses formed on an outer circumferential side thereof so as to be recessed downward and spaced apart from one another in a circumferential direction, This pest trap has a pest guide portion having a sloped surface for pests, the sloped surface being arranged between adjacent recesses among the plurality of recesses in the circumferential direction and covered from above by the hood portion.

2. The pest trap according to claim 1, A pest trap, wherein the hood portion is supported by the pest guide portion by the recess portion.

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